#include<iostream>
#include<vector>
using namespace std;
int main()
{
	vector<int> v(100);
	for(int i = 0;i < v.size();++ i)
	cout<<v[i];
	vector<int>::iterator i;
	for(i = v.begin();i != v.end();++ i)
	cout<<* i;
	for(i = v.begin();i < v.end();++ i)
	cout<<* i;
	i = v.begin();
	while(i < v.end()){
		cout<<* i;
		i += 2;
	}
}